7
	1		6	3
1					2	4
						1
	2
	5	1					8
			2	6		5
6

Difficulty: Very easy (0)

5				3
		3	2				1
4
	6	5
					3	2
							7
2				5	4
			1				3

Difficulty: Medium (0)

			2		6		5
					1
				6	8
					2	4
	5	2
		4	7
		1
3		5		1

Difficulty: Very easy (0)

2				8
1			3	6
				7
						5	3
5	3
			2
			1	5			8
			6				7

Difficulty: Very easy (0)